# SparkPost: Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-09-17 09:06 UTC · Resolved: 2026-09-17 10:00 UTC · Duration: 54 min
- Updates: 3 · Affected components: SMTP Delivery (Outbound Message Delivery) - SMTP Delivery - USA, SMTP Delivery - USA
- [Vendor status page: https://stspg.io/9s69cq92qy47](https://stspg.io/9s69cq92qy47)
- [Company: SparkPost](https://rewindex.com/company/sparkpost.md)

## Timeline of updates

- **investigating** 2026-09-17 09:06 UTC: We are investigating an increase in delivery latency for some outbound messages.  (NOTE: This does not impact our customers hosted in the EU.)
- **monitoring** 2026-09-17 09:47 UTC: A fix has been implemented and we are monitoring the results.
- **resolved** 2026-09-17 10:00 UTC: This incident has been resolved.


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Canonical: https://rewindex.com/company/sparkpost/incidents/vsnw7z1xgtr5 · Markdown: https://rewindex.com/company/sparkpost/incidents/vsnw7z1xgtr5.md · JSON: https://rewindex.com/api/v1/companies/sparkpost/incidents/vsnw7z1xgtr5 · Generated 2026-10-20T01:31:47.726Z